prepare common.sh for usr/local/build/autotest

CQ-DEPEND=CL:I836d933e8a828177304dd10a74841138a9502aff
TEST=See CQ-DEPEND'ed CL.
BUG=chromium:256906

Change-Id: I468021b47f5a2d9084ef084e10bcee84200dd1a7
Reviewed-on: https://chromium-review.googlesource.com/63058
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Tested-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Aviv Keshet <akeshet@chromium.org>
1 file changed